Cover for bleach and dye vats.



PATENTBD OCT. 1, 1907.

F. R. VOSE. COVER FOR BLEACH AND DYE VATS APPLICATION FILED MAR. 11, .1907.

2 SHEETS-SHEET 1.

flit-ml: PETERS co., wasmuamn. oc.

No. 867,453; PATENTED OCT. 1, 1907 F. R. VOSE.

OOVER POR BLEACH AND DYE VATS APPLICATION rILnn 11.11, 1901.

2 SHEETS-8HEBT 2.

UNITED STATES PATENT orrron. I

COVER FOR BLEACH AND DYE VATS.

a Specification of Letters Patent.

Patented Oct. 1,1907.

Application filed March 11,1907. Serial No. 361,679.

1 To all whom it may concern:

strong and durable cover for use in connection with bleaching and dyeing vats or similar apparatus, and capable of resisting heavy strains when in use.

In certain forms of apparatus for bleaching and dyematerial to be treated is placed in bulk in a large circular tank or vat and then a cover is applied and rigidly secured in place, the cover having numerous perforations therein.

The bleach or dye liquor is then forced into the vat and through the material ,to be treated, such material being at all times submerged in the liquor, a very con.- siderable pressure being required, subjecting the cover to heavy strains.

The covers have heretofore been made as heavy castings, or of steel or iron plates, ribbed or strengthened in various ways, and they are apt to give way under the strain, making it dangerous for the operatives. When such a cover breaks it is worthless and must be absolutely discarded, and its weight makes it very unwieldy in handling.

In my present invention I have produced a cover of great strength, capable of successfully resisting the greatest strains to which it can be subjected in practice, and so constructed that should some portion thereof give way it can be readily repaired, and at the same time the cover is of such weight that item be readily handled. 1

In accordance with my invention I make the cover of metal plate, preferably rolled steel, the circular body portion being dished to withstand the strains to which it is subjected, the body portion being provided with radial stiffening members.

To further resist the tendency of the body portion to become flattened by pressure thereon and to also strengthen the rim of the cover I rigidly attach to the body portion and to the outer ends of the stiffening members a continuous pressure-resisting ring.

The body portion is conveniently made of a series of segmental sections each one having upturned side flanges, the abutting flanges of adjacent sections being rigidly secured together and forming the radial stiffening members referred to.

1ng raw stock, such as cotton, wool and the like, the

An annular cup-like center member is provided to which the inner ends of the flanges are secured.

The various novel features of my invention will be fully described in the subjoined specification and particularly pointed out in the following claims.

Figure 1 is a top plan view of a cover embodying one practical form of my invention; Fig. 2 is a diametral section thereof on the line 22, Fig. 1; Fig. 3 is a plan view of one of the sections before the side flanges are bent up.

In the present embodiment of my invention I have shown the circular body portion of the cover as composed of ten like segmental sections 1, but it will be understood that the particular number of sections is not material.

Referring to Fig. 3 a blank of the shape therein shown is first formed of metal plate, such as rolled steel, of the requisite thickness, and slits 2, 3 are formed at the inner and outer ends thereof, on the lines which are to form the sides of the section; The winglike portions 4 are then upturned by suitable bending devices to form side flanges, the bending being along the dotted lines 5, which are in alinement with the slits 2, 3. Before bending the plate is provided with perforations 6 in the main portion, and suitable rivet holes 7 are provided in the flanges 4, and also at 8 along the peripheral portion of the plate between the slits 3. The flanges are bent or inturned at each end, on the lines 9, 10 respectively, Fig. 3, such inturned portions being indicated at 11 and 12, see Fig. 1. It will thus be manifest that when the segmental sections are ready for assembling the body of the plate at its inner and outer ends Will extend beyond the inturned portions of the side flanges, such extended portions being shown at 13, 14.

By reference to Figs. 2 and 3 it will be seen that the side flanges are of greatest depth at their inner ends, and gradually decrease in depth toward the outer or peripheral portions 1.4 of each section, which, when the sections are assembled, gives a dished structure to the body portion of the cover, as shown clearlyin Fig. 2.

The side flanges of adjacent sections are abutted and rigidly connected, as by rivets 15, each pair of connected flanges forming a radial stiffening member or arm on the upper face of the sectional body portion.

The inturned portions 12 of the flanges 4 are now riveted to a center member, and herein I have shown the latter as a cup-like member 16 having a perforated bottom 17, the flange ends 12 being secured to the circular wall 16 by suitable rivets 18.

As shown in Fig. 2 the inner ends of the flanges are of greater depth than the center member, and above the latter I insert a metal strengthening ring 19 to which the flanges are secured by rivets 20.

The extended inner ends 13 of the sections 1 project under and against the bottom 1'7 of the center mem her, as shown in Fig. 2, but otherwise are not secured thereto. The center member may be made of cast iron, but I prefer to spin, press or otherwise shape it of steel plate.

Referring to Fig. 2 the dishing of the cover will be very apparent, the sections 1 sloping upward from the center toward the periphery, upward pressure on the cover, tending to flatten it, being resisted by the radial stiffening members described, as well as by the dishing itself. Such strains are transmitted through the flanges 4 and to take up such strains and resist the buckling or flattening tendency of the cover and at the same time strengthen its rim, I provide a peripheral pressure-resisting member. Such member is preferably an angle iron, bent into circular shape and having its ends welded together to form a continuous ring 21 having an external lateral or base flange 22. The oppositely turned ends 11 of each pair of connected flanges 4 are riveted at 23 to the ring, rigidly connecting the ring and the radial stiffening members, while the base flange 22 of the ring rests upon the peripheral portions 14 of the several segmental sections l. Rivets 24 connect such portions of the sections and the base flange, and it will be manifest that the ring and its flange not only stiffen and strengthen the rim of the cover, but the ring takes up and resists the compressive strains transmitted thereto by the radial flanges 4.

The cover so made is lighter in weight than a casting, and it is of far greater strength and stiffness, being capable of resisting the heaviest strains to which it may be subjected in ordinary practice.

Owing to the dishing of the cover and the general structure thereof it cannot be snapped as a whole by abnormal pressure, but any rupture which might occur would be in one of the segmental sections. In event of such rupture the cover can be repaired by cutting off the rivets of the broken section and inserting in its place a new section.

To further stiffen and strengthen the rim of the cover alongthe peripheral portions 14 of the segmental sections I apply short curved strengthening members 25 to the under face of the portions 14 of the segmental sections, such members 25, as shown in Fig. 1, extending across the joints between adjacent sections and being secured to the latter by the rivets 24 at each side of the joints. Such peripheral strengthening members reinforce the rim at the joints, as will be obvious, and act in conjunction with the base flange 22 to obviate any tendency of the cover to open at the joints, it being remembered that the portions 14 of the sections 1 project beyond the ends of the flanges 4 and hence are not stiffened thereby as is the main part of the section.

Staple-like eyes 26 are secured on the cover to facilitate the handling thereof by means of chains, as 27, Fig. 2, when applying or removing the cover.

My invention is not restricted to the precise construction and arrangement herein shown and described, as the same may be modified or varied in different particulars without departing from the spirit and scope of my invention as embodied in the appended claims.

Having fully described my invention, what 1 claim as new and desire to secure by Letters Patent isz- 1. A cover for bleaching and dyeing vats, comprising perforated metallic segmental sections having integral, radially disposed side flanges, 1' id connections between the abutting flanges of adjacei sections, an annular center member, and a concentric lllt surerresisting ring. the inner and outer ends of the flanges being secured to the center member and the ring, respectively.

2. A cover for bleaching and dyeing vats, comprising perforated metallic segmental sections having integral, radially disposed side flanges, rigid connections between the abutting flanges of adjacent sections, an annular center member, to which the inner ends of the flai s are secured, and a peripheral, continuous pressure-restting ring having a lateral flange, the outer ends of the section flanges being secured to the ring and the outer ends of the sections being secured to the lateral flange.

3. A cover for bleaching and dyeing" vats, comprising :1. plurality of segmental sections formed of metallic plates perforated and having upturned radially disposed side flanges increasing in depth from the periphery of the cover toward its center, rigid connections between the abutting flanges of adjacent sections, a center member secured to the inner ends of the flanges, and a continuous pressure resisting member rigidly secured to the outer ends of the sections and their flanges.

4. A cover for bleach and dye vats, comprising a eireular, dished body portion, radial stiffening members thereon, and a continuous pressure-resisting member ri idly attached to the periphery of the body portion and to the outer ends of the stiffening members.

5. A cover for bleach and dye vats, comprising a perforated, circular and dished body portion, radial stiffening members thereon decreasing in depth from the center of the body toward its periphery, and a continuous pressureresisting member rigidly attached to the outer ends of the stiffening members and having a base flange to which the periphery of the body portion is secured.

G. A cover for bleach and dye vats, comprising a circular, dished body portion composed of segmental metallic plates having upturned side flanges ahutted against and rigidly connected with the flanges of adjacent plates, each pair of connected flanges forming a radial stiffening incinher, the ends of the flanges on each plate l)()lll l inturned, a circular center member to which the inturned inner ends of the flanges are secured, and a continuous ring of angle iron secured to the intnrned outer ends of the flanges and to the peripheral portions of the plates.

7. A cover for bleaching and dyeing vats, comprising a. cup-like centermember having a perforated bottom, a se ries of segmental sections each formed of a perforated metallic plate having upturned side flanges inturncd at their ends, the inner ends of the flanges being secured to the circular wall of the center member, rigid connections between abutting flanges of adjacent sections, to form radial stiffening members, and a continuous pressure-re sisting ring rigidly secured to the outer ends of the flanges and to the peripheral portions of the sections between the flanges, the sections sloping downward from the periphery to the center lnember, to dish the cover.

8. A cover for bleaching and dyeing vats, comprisinga cup-like center member having a perforated bottom, a series of segmental sections each formed of a perforated metallic plate having upturned side flanges secured at their inner ends to the circular wall of the center member, a continuous strengthening ring above said member and to which the inner ends of the flanges are also secured, rigid connections between abutting flanges of adjacent sections, said flanges having a gradually decreasing depth from the center member outward, a continuous pressure-resisting ring secured to the outer ends of the flanges and having abase flange to which the peripheral portions of the sections are secured, and peripheral stiffening members secured. to the under side of said sections below the base flange, said members crossing the joints of adjacent sections.

9. A cover of the class described, comprising a circular, dished body portion composed of segmental metallic perforated plates each having upturned side flanges decreas ing in depth from the center outward, the abutting flanges of adjacent sections being riveted together to form radial stiffening arms for the body, a circular center member to which the inner ends of the flanges are riveted, and a continuous pressure-resisting ring riveted to the outer ends of the flanges and having an outwardly extended base flange riveted to the peripheral portions of the sections extended beneath said base flange.

In testimony whereof, I have signed my name to this specification, in the presence of two subscribing witnesses.

, FRANCIS R. VOSE. Witnesses HARRY E. LOVEREN, Norm D. SMITH. 

